Journal List > Ann Clin Neurophysiol > v.19(1) > 1099502

Jung, Kim, Min, Kang, Lee, Park, Kim, and Kwon: Acute-onset chronic inflammatory demyelinating polyneuropathy following hepatitis A virus infection

초록

An infection is less likely to elicit chronic inflammatory demyelinating polyneuropathy (CIDP) than Guillain-Barré syndrome. We here report a case of acute-onset CIDP following hepatitis A virus infection and briefly comment on the potential mechanisms regarding the induction and chronicity of autoimmunity after a viral infection.

REFERENCES

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Table 1.
Findings of nerve conduction studies (NCSs) at admission, hospital day 14, and hospital day 120
Nerve and stimulation site TL (ms) CMAP duration a (ms) CMAP amplitude (mV) NCV (m/s)
Motor NCSs        
Median (right)        
Wrist–APB 31.2/32.3/28.5 (≤ 3.6) 22.7/17.9/16.8 (≤ 6.6) 1.8/5.0/1.4 (≥ 5.0)  
Wrist–elbow   22.1/19.0/23.9 1.5/4.3/1.7 37/37/53 (≥ 50.0)
Ulnar (right)        
Wrist–ADM 11.7/11.9/9.9 (≤ 2.5) 13.3/14.4/12.7 (≤ 6.7) 1.6/3.3/7.8 (≥ 5.0)  
Wrist–elbow   11.4/13.6/15.1 1.5/3.1/1.7 28/28/60 (≥ 50.6)
Peroneal (right)        
Ankle–EDB 23.3/20.0/19.2 (≤ 4.8) 11.8/14.0/18.2 (≤ 7.6) 0.8/0.9/1.0 (≥ 4.0)  
Ankle–fibula   15.6/25.4/37.0 0.2/0.4/0.3 44/42/18 (≥ 41.7)
Tibial (right)        
Ankle 11.8/11.6/16.2 (≤ 5.1) 13.3/25.9/55.8 (≤ 8.8) 0.7/0.6/0.5 (≥ 5.0)  
Popliteal fossa   17.6/32.5/33 0.7/0.5/0.5 52/44/25 (≥ 40.6)
Nerve and stimulation site SNAP amplitude (μV) NCV (m/s)
Sensory NCSs        
Median (right), orthodromic method b        
Finger   NP/NP/NP (≥ 10)   -
Wrist   17.5/12.1/ND (≥ 10) 5 55/52/ND
Elbow   41.7/40.8/ND (≥ 10) 5 55/55/ND
Ulnar (right), orthodromic method b        
Finger   NP/NP/NP   -
Wrist   10.7/9.4/ND 55/5 6/ND (≥ 47.5)
Elbow   25.4/28.9/ND 55/5 4/ND (≥ 39.1)
Sural (right), antidromic method        
Lower leg   5.5/3.2/NP (≥ 6.0) 34/3 4/ND (≥ 34.7)
Dorsal sural (right), antidromic method        
Lower leg   NP/NP/NP (≥ 3.0)   -
Triplets indicate the values at admission/hospital day 14/hospital day 120. Numbers in parentheses are normal reference values. TL, terminal latency; CMAP, compound muscle action potential; NCV, nerve conduction velocity; APB, abductor pollicis brevis; ADM, abductor digiti min-imi; EDB, extensor digitorum brevis; SNAP, sensory nerve action potential; NP, no potential; ND, not done. a CMAP duration is defined as the interval between the onset of the first negative peak and the return to baseline after the last negative peak.
b The third sensory NCSs of the median and ulnar nerves were performed using the antidromic method.
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